#3565: kl operators don't get persisted
Merge pull request #9 from fabric-engine/rivera-empty-klops-fix

#3565: kl operators don't get persisted
Fixed UNGUARDED env var behaviour, #3584.
Merge branch 'rivera' of github.com:fabric-engine/SpliceAPI into rivera
#3578: make the use of eval context based on graph use
improve auto timer performance
Merge pull request #10 from fabric-engine/rivera-issue-3578

#3578: make the use of eval context based on graph use